Centrifugal machine.



Pafehted sept. 1B, |900..

w. H. coo| CENTRIFUGAL MACHINE. mp'plicacion medmy 23, 1900.)

(himmel.)

l @222er @ZZ/(615565K y ff: @Ma/@Q4 `UNITED STATES PATENT OFFICE.

WALTER H. COOK, OF NEW' ORLEANS, LOUISIANA.

.CEN'II'RlFUGAL MACHINE.

SECIFICATION forming part of Letters Patent No. 658,240, dated September 18, 1900.

appnoaon'fina my 2s, 1900.

To 'all whom it may concern.-

Be' it known that I, WALTER H. Cook, a

citizen of the United States, residing at New Orleans, inithedparish of Orleans'and State of Louisiana, have invented new and useful lma4 condition suitable for treatment by granutreatment.

. 'It is my purposevalso to provide improved means -for automatically feedingl non-liquid substances into the separator, for accurately controlling the rate of feed, for regulating the passage of material through the separator,and for making the volume and movement of the material substantially uniform at all points in the separator.

It is a further purpose of my invention to provide;a centrifugal separatorwith simple means for removingdeposits or accumulations 'of separated material from its interior, this feature of my invention being capable of giving a. forward movement to the material treated and adapted by a simple adjustment to per-- mit the deposit of filter material on the in ner surface of the rotating memberof the apparatus and of maintaining such deposit at a predetermined uniform .thickness as long as its utilization asa filtering medium is required.

It is also my object to provide simple and thoroughlyeiicieut means whereby theseparator may be quickly and properly cleansed without arresting its operation;

The invention also comprises other useful and novel features, as hereinafter described;

and then pointed out in the claims.

In the annexed drawings', Figurel isacentral vertically-longitudinal section of a centrifugal 'separator constructed in accordance with my invention. Fig. 2 is a. view of a ribbonscraper' in spiral form. Fig..3 shows a form-of spiral brush that is adapted to serve'- Beril No. 17,898. (No modal.:

as a scraper and which will keep the lteringsurface clean. Fig. 4. is an end view of a rotary scraper for regulating the deposit of inaterial upon the interior of the rotary member of the Acentrifugal apparatus.

` Referring to Fig'. 1 of the drawings,the ref erence-numeral 1 designates a stationary casing that 'is supported bybrackets on standards 3, of any suitable form. A This stationary casing 1 maybe 'approximately cylindrical in form,but is constructed with a depressed bottom portion that is inclinedv from both ends toward its center, where it connects with a pipe 4, having'a hand-valve 5 therein. The pipe 4 is provided between the valve 5 and the ends of the stationary casing 1 are provided with .suitable centrally-arranged openin gs for the passage outward of tubular trunnions 8,

that are xed to or formed o n the ends of ay trunnion 8 a'cylindrical conveyer-casing 11A and I2, respectively, and these conveyor-cas-v ings aresupported by uprights or standards .bottom of" said casing with a lateral branch pipe 6, having a handvalve 7, as shown. The

13 beyond the standards 10, that support-the trunnions of a rotary drum or. cylinder.

In the cylindrical con veyer-casing 11 there is mounted' a spiral conveyor 14, Fig. 1, having its shaft 15 extended at one end and provided with a pulley 16 for actuating said conveyer. The conveyor-casing 11 is provided at its outer end with a hopper or feedinlet 17 for the introduction of solid material into the separator by thev operation of said con- 'l end of the other conveyor-casing. .This con-v veyor-casing 12 is provided on the upper side of its inner end with an opening .18 for the passage of material from the interior of the rotary drum or cylinder l) to be Areceived by a spiral conveyer 14., having a shaft 15' and drivingfpulley 16B of the same character: as

frs

already described with reference to the inletconveyer.

For the purpose of rotating! the separator drum or cylinder 9 each of its tubular trunnions 8 is provided with a friction-disk 19, and these friction-disks are in contact, respectively, with smaller friction-disks 20, carried o n shafts 21, having drivingpulleys 22 thereon. The shafts 21 of the friction-disks 20 may be mounted in suitable bearings provided in the standards 3, 10, and 13.

The material that is fed to the inlet-conveyer 14' through the feedppening 17 will pass into the rotary drum 9 through the in ner end of the inlet conve'yer-casing 11, this in ner end of the casing 11 'being' left open except for the web or spider frame 23,'that supports the inner end of the conveyor-shaft. The solid material that is discharged from ghe rotary drum or cylinder 9 passes thence hrough the opening 18 into-the outlet-conveyer l2 to the conveyor 14 therein and finds un exit throukha'discharge-opening 24 at the outer end of this conveyer-casing.

The rotary drum or: cylinder 9 has its cylindrical walls preferably of double thickness, somewhat spaced apart, and each wall is provided' witha series of perforations 25 for th'e passage offliquid from the interior of the rotary drum or cylinder. If desired, any

suitable filtering material 26 may be placedbetween the two perforated and concentricallay-arranged walls of the rotary drum or cyl- 1n er. f

. YOn the standards 13 there are erected uprights or vertically-extended bearing-arms 27 to provide beariugs'zfor a rotary shaft 28, that is extended through the rotary drum 9 and its tubular trunnions.' A pulley 29 on one end of the shaft 28 provides means for the rotation of said shaft. This rotary shaft 28 is provided at suitable intervals with radially-arranged scraper-blades 30, Figs. 1 and 2, that preferably alternate with each other, as shown, The bearings in which the end portions of the rotary scraper-shaft 2B are supported may be made' vertically adjustable by means of screwsv 31, through which 'saidl shaft-may be raised or lowered to adjust the ends of the scraper-blades 30 toward and 'from the interior wall of the rotary separator-drum. lrYhen the rotary scraper has been properly adjusted, it 'may be secured in the desired position by meahs of lock-nuts 32 or other suitable means. 1

As shown in Fig. 1, the rotary separatordrum 9 and its tubular trunnious 8` together with the cylindrical conveyor-castings 11 and 12, are preferably'arranged in longitudinallyinclined position. The shaft 28 of the rotary scraper also has a similar inclination. By this arrangement the solid particles that are separated from the material under treatment and which are deposited on the interior of the cylindrical and perforated Walls of the drum will be gradually worked forward from the inlet end of the'dr'um toits outlet endl and at the same time this layer of material` will be deposited uniformly and to a regulated thickness, according to the adjustment that is given to the rotary scraper in its position with relation to the perforated walls of the.

drum. It'will be obvious that owing te the inclined position of the rotary drum 9 any material that is scraped from the uppermost portion of it-sperforate'd wallwilldrop uppu the lower portion of said wall at an advanced point and so on as thedrnm and the scraper are rotated independentlyof each other. In

this way the deposit of separated material willl become uniform throughout the interior of the drum and the thickness of this deposit may be readily regulated by adjusting the scraper mechanism upward or downward, as may be required.

There are some waters which contain un desirable material, and this material when separated often forms an excellent lilteriugthrough the pe'rforationsl of thedriimfand will thus enter the stationary casingljw'hence it may be drawn ol Ain a clear condition through either ofthe valved pipesaor 6,.

Another mode of employing the Iapparatus for the filtering of water is as follows: By feeding into fthe inlet-conveyer casii'iglll'a quantity of nely-ground filter-stone'or any suitable filtering mediumin e. n'e granular condition this' filtering medium will Vbe dis tributed by centrifugal action ands' by aid of the rotary scraper evenly -over the inner snrface 'of the rotary drum, l.It can be known when a sucent quantity of this "llltering material has been fed-to the filter bythe'fact of V'the said filtering medium commencing to discharge itself at' the discharge end of the apparatus. When there is a suiicientquantity in the apparatus, then ythe water can be turned on, the said'lte'ring material being held in its position by the centrifugal action of the machine, and the water to be filtered being also acted upon centrifuga-Hy will be thereby forced through the filtering medium and through theperforated walls of the drum, and will thus enter the stationary outer casing. At the same time all foreign accumulations are worked olf and out of the apparatus through the outlet-conveyor mechanism.

Vhen the apparatus is employed for filterinf;` water, the inlet-conveyor may be dispensed with,or be left inactive, as' the water will readily flow through the conveyor-casing 11 by gravity.

In separating liquids from solids the ma- .The solid materials that are lett in the drum nradually work out through the outlet-conveyer.

'When it is desired to cleanse the apparatus, a .suitable cleansing medium-such as steam, hot water, or compressed air-may be introduced into the interior of the rotary drum 9 by means of a perforated pipe 33, Fig. 1, that is extended into said drum from one end thereof to very near its other end. A valve 34' is provided on the pipe 33 to control the fiow of the cleansing medium into the drum. ln like manner a cleansing medium-such as steatn, compressed air, or hot water-may be introduced into the stationary outer casing l by means of a perforated pipe'l 3,5, that is inserted into one end of said casing andextends therein along and closely adjacent to the under side of the rotary drum. This pipe 35 is also provided with a hand-valve 36 for con` troliingtheinlet oioleansing duid. By means of the perforated pipe 33 the interior oi the rotary drum 9 may be throughly cleansed without stopping the operation of the appalratus and 'at the same time the perforated pipe 35 provides a ready means for cleansing the interior of the rotary drum and theinterior of the outer stationary easing without stopping the apparatus. l'lo further facilitate the cleansing ofthe apparatus and other purposes, the rotary drum may be constructed in two longitudinal halves or parts, connected to each other by a hinge, as 37, Fig. 1.

In place of the rotary scraper 30 I can use a rotary ribbon scraper 38, Fig. 2, or I may employ espiral scraper 39, Fig. 3, constructed in the form ot' a brush that will also serve to keep clean the filtering-surfaces of the rotary casings.

From the foregoing description theoperation and' advantages of my improved centrifugal separator will be readily understood.

What I claim as my invention isl. In .a centrifugal separator, the combination of an outer stationary casing, an inner perforated and rotary drum provided with tubular'l truunions, cylindrical conveyor-casings extended through `and supported inde pendently of said trnnnions, spiral conveyors arranged in said conveyeroasings, one of said con veyers being adapted to feed material into the rotary drum and the other to discharge material-therefrom, and a rotary scraper located in the upper portion of said drum and having its shaft extended through the tubular trunnions, substantially as described.

2. In a centrifugal separator, the comblna tion oi1 an outer stationair)y casing, an inner rotary drum having;` perforated cylindrical walls and provided with tubular trunnions, cylindrical conveyer-casings extended through said truunions and supported independently thereof, spiral conveyors arranged in said conVeyer-casings, a rot-ary scraper comprising a shaft provided with. radially-arranged scraper-blades, and means for supporting the shaft of said rotary scraper and for adjusting it to and from the interior wall ot the rotary drum, substantially as described.

. 3. In a. centrifugal separator, the vcombination of an outer stationary casing, a valved pipe communicating with the lower part of said casing, a rotary perforated'. drum arranged within the casing and provided with tubular trunnions, cylindrical conveyor-casings extended through said trunnions and each providedwith an inlet and an outlet, spiral conveyors mounted in said conveyorcasings, means for rotating said spiral conveyers, mechanism for rotating the inner perforated drum, and a rotary scraper extended through said drum and its trunnions, sub stantially as described.

4. In a centrifugal separator, the combination of an outer stationary casing, having a depressed lowerbottom and a valved pipe connected therewith, a rotary perforated drum provided with tubular trnnnions and arranged in an inclined position within said outer casing, inclined cylindrical -conveyercasings extended through the-tubular trunnipns of the drum and supported independent1ythereof,-spiral conveyors in said oasings, a rotary scraper extended in an inclined position through the drum and its tubular" trunnions, and means for adjusting said scraper toward and from the perforated wall of the drum, substantially as described.

5. 1n a centrifugal. separator, the combination of an outer stationary casing, an inner perforated drum provided with tubular trunl nions, friction-disks on said trunnions, powerdriven friction-disks to bear against the frictiondisks of the drum to rotate the same, cylindrical conveyer-casings extended binto the drum throughits tubular trunnions and each provided with -an inlet and anvoutlet, spiral con veyers mounted in said conveyer-casings, means for rotating said conveyors, a rotary scraper extended through an, upper part of the drum and its' tubular trunnions, means for adjusting said scraper toward ,and from the perforated wall of the drum, and perfo rated cleansing-pipes inserted, respectively, into said drum and into its outer casing at one end of each, substantially as described.

6. In acentrifugal separator, au outer casing, a perforated drum arranged therein, a. lteriug material interposed between the walls of said drum, moans for imparting a rotary movement to said. drum, a suitably arran ed conveyor adapted to supply materist to sai drunns suitably-arranged conveyor I 'adapted to discharge material from said drum,

In testimony whereof I have hereunto seh my hand in presence of two subscribing Wn nesses.

WALTER H. CUC/Yi.

Witnesses:

PORTER PARKER, LAURENCE JANIN. 

